Display Controller, Video Signal Transmitting Method and System

Abstract

A display controller, video signal transmitting method and system thereof are provided. The display controller includes a processing circuit; a transmitting channel, coupled to the processing circuit; a receiving channel, coupled to the processing circuit; and a clock generator, that generates an internal clock signal and an external clock signal. Upon receiving a video signal, the processing circuit processes a first partial pixel data of the video signal to output a first display control signal. The transmitting channel converts a second partial pixel data of the video signal to a partial video signal having a multiple data rate according to the internal clock signal to be outputted.

Description

CROSS REFERENCE TO RELATED PATENT APPLICATIONS[0001]This patent application claims priority from Taiwan Patent Application No. 098122253, filed in the Taiwan Patent Office on Jul. 1, 2009, entitled “Display Controller, Video Signal Transmitting Method and System Thereof”, and incorporates the Taiwan patent application in its entirety by reference.TECHNICAL FIELD[0002]The present disclosure relates to a display controller, a video signal transmitting method and a system thereof, and more particularly, to a display controller with a multiple data rate, and a video signal transmitting method and a system thereof.BACKGROUND OF THE PRESENT DISCLOSURE[0003]FIG. 1 shows a schematic diagram of a conventional liquid crystal display (LCD) system that comprises an LCD panel 100 and a display controller 130. The LCD panel 100 is divided into a display area 112 and a non-display area 114. The display area 112 comprises a thin film transistor (TFT) array, and the non-display area 114 comprises a ...

AI Technical Summary

Benefits of technology

The present patent provides a display controller, video signal transmitting method, and display system that can transmit a partial video signal with a multiple data rate between display controllers. This reduces the number of pins required for the display controllers and allows for more efficient data transmission. The display controller receives a video signal and generates a display control signal based on the video signal's partial pixel data. The transmitting channel converts the partial pixel data to a partial video signal with reference to an internal clock signal. The receiving channel converts the partial video signal to a second display control signal with reference to an external clock signal. The display system comprises the display controllers and an LCD panel for displaying frames based on the display control signals. The technical effect of this patent is to improve the efficiency and reduce the complexity of transmitting video signals between display controllers.

Problems solved by technology

Along with increases in the size and resolution of LCD panels as well as an update rate of a display video, the number of display control signals is also increased, such that a processing speed of a single display controller no longer meets real-time requirements for processing video signals or generating display control signals.

Images